Adafruit powerboost smart charger for rechargeable 5v lipo or liion batteries adafruit 2465 the b powerboost 1000c b is the perfect power supply for a portable project and has a built in load sharing battery charger circuit that keeps power hungry projects running even whilst recharging the battery the dc dc boost converter module can be powered by any 3 7v liion lipoly battery and converts the battery output to 5 2v dc for running 5v projects br br a handy feature is the output